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Added osgparticleeffects example

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This commit is contained in:
Robert Osfield 2005-04-04 08:47:21 +00:00
parent 22e446dbc9
commit 9c5567d3e5
7 changed files with 615 additions and 0 deletions
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1
Make/makedirdefs
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@ -198,6 +198,7 @@ EXAMPLE_DIRS = \
osgoccluder\
osgpagedlod\
osgparticle\
osgparticleeffects\
osgpick\
osgplanets\
osgpoints\

30
VisualStudio/VisualStudio.dsw
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@ -1131,6 +1131,36 @@ Package=<4>
###############################################################################
Project: "Example osgparticleeffects"=.\examples\osgparticleeffects\osgparticleeffects.dsp - Package Owner=<4>
Package=<5>
{{{
}}}
Package=<4>
{{{
Begin Project Dependency
Project_Dep_Name Core osg
End Project Dependency
Begin Project Dependency
Project_Dep_Name Core osgDB
End Project Dependency
Begin Project Dependency
Project_Dep_Name Core osgGA
End Project Dependency
Begin Project Dependency
Project_Dep_Name Core osgParticle
End Project Dependency
Begin Project Dependency
Project_Dep_Name Core osgProducer
End Project Dependency
Begin Project Dependency
Project_Dep_Name Core osgUtil
End Project Dependency
}}}
###############################################################################
Project: "Example osgpbuffer"=.\examples\osgpbuffer\osgpbuffer.dsp - Package Owner=<4>
Package=<5>

97
VisualStudio/examples/osgparticleeffects/osgparticleeffects.dsp Normal file
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@ -0,0 +1,97 @@
# Microsoft Developer Studio Project File - Name="Example osgparticleeffects" - Package Owner=<4>
# Microsoft Developer Studio Generated Build File, Format Version 6.00
# ** DO NOT EDIT **
# TARGTYPE "Win32 (x86) Console Application" 0x0103
CFG=Example osgparticleeffects - Win32 Release
!MESSAGE This is not a valid makefile. To build this project using NMAKE,
!MESSAGE use the Export Makefile command and run
!MESSAGE
!MESSAGE NMAKE /f "osgparticleeffects.mak".
!MESSAGE
!MESSAGE You can specify a configuration when running NMAKE
!MESSAGE by defining the macro CFG on the command line. For example:
!MESSAGE
!MESSAGE NMAKE /f "osgparticleeffects.mak" CFG="Example osgparticleeffects - Win32 Release"
!MESSAGE
!MESSAGE Possible choices for configuration are:
!MESSAGE
!MESSAGE "Example osgparticleeffects - Win32 Release" (based on "Win32 (x86) Console Application")
!MESSAGE "Example osgparticleeffects - Win32 Debug" (based on "Win32 (x86) Console Application")
!MESSAGE
# Begin Project
# PROP AllowPerConfigDependencies 0
# PROP Scc_ProjName ""
# PROP Scc_LocalPath ""
CPP=cl.exe
RSC=rc.exe
!IF "$(CFG)" == "Example osgparticleeffects - Win32 Release"
# PROP BASE Use_MFC 0
# PROP BASE Use_Debug_Libraries 0
# PROP BASE Output_Dir "Release"
# PROP BASE Intermediate_Dir "Release"
# PROP BASE Target_Dir ""
# PROP Use_MFC 0
# PROP Use_Debug_Libraries 0
# PROP Output_Dir "Release"
# PROP Intermediate_Dir "Release"
# PROP Ignore_Export_Lib 0
# PROP Target_Dir ""
MTL=midl.exe
# ADD BASE CPP /nologo /W3 /GX /O2 /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_MBCS" /YX /FD /c
# ADD CPP /nologo /MD /W3 /GR /GX /O2 /I "../../../include" /I "../../../../OpenThreads/include" /I "../../../../Producer/include" /I "../../../../3rdParty/include" /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D "_MBCS" /YX /FD /Zm200 /c
# ADD BASE RSC /l 0x809 /d "NDEBUG"
# ADD RSC /l 0x809 /d "NDEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /machine:I386
# ADD LINK32 OpenThreadsWin32.lib /nologo /subsystem:console /pdb:none /machine:I386 /out:"../../../bin/osgparticleeffects.exe" /libpath:"../../../lib" /libpath:"../../../../OpenThreads/lib/win32" /libpath:"../../../../Producer/lib" /libpath:"../../../../3rdParty/lib"
!ELSEIF "$(CFG)" == "Example osgparticleeffects - Win32 Debug"
# PROP BASE Use_MFC 0
# PROP BASE Use_Debug_Libraries 1
# PROP BASE Output_Dir "Debug"
# PROP BASE Intermediate_Dir "Debug"
# PROP BASE Target_Dir ""
# PROP Use_MFC 0
# PROP Use_Debug_Libraries 1
# PROP Output_Dir "Debug"
# PROP Intermediate_Dir "Debug"
# PROP Ignore_Export_Lib 0
# PROP Target_Dir ""
MTL=midl.exe
# ADD BASE CPP /nologo /W3 /Gm /GX /Zi /Od /D "WIN32" /D "_DEBUG" /D "_CONSOLE" /D "_MBCS" /YX /FD /c
# ADD CPP /nologo /MDd /W3 /Gm /vd0 /GR /GX /Zi /Od /I "../../../include" /I "../../../../OpenThreads/include" /I "../../../../Producer/include" /I "../../../../3rdParty/include" /D "_CONSOLE" /D "_MBCS" /D "FL_DLL" /D "WIN32" /D "_DEBUG" /FR /YX /FD /Zm200 /c
# ADD BASE RSC /l 0x809 /d "_DEBUG"
# ADD RSC /l 0x809 /d "_DEBUG"
BSC32=bscmake.exe
# ADD BASE BSC32 /nologo
# ADD BSC32 /nologo
LINK32=link.exe
# ADD BASE LINK32 kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib /nologo /subsystem:console /debug /machine:I386 /pdbtype:sept
# ADD LINK32 OpenThreadsWin32d.lib glu32.lib opengl32.lib /nologo /subsystem:console /debug /machine:I386 /nodefaultlib:"libcmt" /out:"../../../bin/osgparticleeffectsd.exe" /pdbtype:sept /libpath:"../../../lib" /libpath:"../../../../OpenThreads/lib/win32" /libpath:"../../../../Producer/lib" /libpath:"../../../../3rdParty/lib"
# SUBTRACT LINK32 /incremental:no
!ENDIF
# Begin Target
# Name "Example osgparticleeffects - Win32 Release"
# Name "Example osgparticleeffects - Win32 Debug"
# Begin Source File
SOURCE=..\..\..\examples\osgparticleeffects\osgparticleeffects.cpp
# End Source File
# End Target
# Begin Group "Resource Files"
# PROP Default_Filter "ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe"
# End Group
# End Project

8
VisualStudio/osgParticle/osgParticle.dsp
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@ -103,6 +103,10 @@ SOURCE=..\..\src\osgParticle\ExplosionEffect.cpp
# End Source File
# Begin Source File
SOURCE=..\..\src\osgParticle\ExplosionDebriEffect.cpp
# End Source File
# Begin Source File
SOURCE=..\..\src\osgParticle\FireEffect.cpp
# End Source File
# Begin Source File
@ -187,6 +191,10 @@ SOURCE=..\..\include\osgParticle\ExplosionEffect
# End Source File
# Begin Source File
SOURCE=..\..\include\osgParticle\ExplosionDebriEffect
# End Source File
# Begin Source File
SOURCE=..\..\include\osgParticle\Export
# End Source File
# Begin Source File

20
VisualStudio/osgPlugins/osgParticle/dot_osgParticle.dsp
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@ -140,6 +140,26 @@ SOURCE=..\..\..\src\osgPlugins\osgParticle\IO_Particle.cpp
# End Source File
# Begin Source File
SOURCE=..\..\..\src\osgPlugins\osgParticle\IO_ParticleEffect.cpp
# End Source File
# Begin Source File
SOURCE=..\..\..\src\osgPlugins\osgParticle\IO_ExplosionEffect.cpp
# End Source File
# Begin Source File
SOURCE=..\..\..\src\osgPlugins\osgParticle\IO_ExplosionDebriEffect.cpp
# End Source File
# Begin Source File
SOURCE=..\..\..\src\osgPlugins\osgParticle\IO_SmokeEffect.cpp
# End Source File
# Begin Source File
SOURCE=..\..\..\src\osgPlugins\osgParticle\IO_FireEffect.cpp
# End Source File
# Begin Source File
SOURCE=..\..\..\src\osgPlugins\osgParticle\IO_ParticleProcessor.cpp
# End Source File
# Begin Source File

456
examples/osgparticleeffects/osgparticleeffects.cpp Normal file
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@ -0,0 +1,456 @@
#include <osgProducer/Viewer>
#include <osg/Group>
#include <osg/Geode>
#include <osg/ShapeDrawable>
#include <osg/Texture2D>
#include <osg/PositionAttitudeTransform>
#include <osg/MatrixTransform>
#include <osgUtil/Optimizer>
#include <osgDB/ReadFile>
#include <osgText/Text>
#include <osgParticle/ExplosionEffect>
#include <osgParticle/ExplosionDebriEffect>
#include <osgParticle/SmokeEffect>
#include <osgParticle/FireEffect>
// for the grid data..
#include "../osghangglide/terrain_coords.h"
osg::Vec3 wind(1.0f,0.0f,0.0f);
osg::AnimationPath* createAnimationPath(const osg::Vec3& center,float radius,double looptime)
{
// set up the animation path
osg::AnimationPath* animationPath = new osg::AnimationPath;
animationPath->setLoopMode(osg::AnimationPath::LOOP);
int numSamples = 40;
float yaw = 0.0f;
float yaw_delta = 2.0f*osg::PI/((float)numSamples-1.0f);
float roll = osg::inDegrees(30.0f);
double time=0.0f;
double time_delta = looptime/(double)numSamples;
for(int i=0;i<numSamples;++i)
{
osg::Vec3 position(center+osg::Vec3(sinf(yaw)*radius,cosf(yaw)*radius,0.0f));
osg::Quat rotation(osg::Quat(roll,osg::Vec3(0.0,1.0,0.0))*osg::Quat(-(yaw+osg::inDegrees(90.0f)),osg::Vec3(0.0,0.0,1.0)));
animationPath->insert(time,osg::AnimationPath::ControlPoint(position,rotation));
yaw += yaw_delta;
time += time_delta;
}
return animationPath;
}
osg::Node* createMovingModel(const osg::Vec3& center, float radius)
{
float animationLength = 10.0f;
osg::AnimationPath* animationPath = createAnimationPath(center,radius,animationLength);
osg::Group* model = new osg::Group;
osg::Node* glider = osgDB::readNodeFile("glider.osg");
if (glider)
{
const osg::BoundingSphere& bs = glider->getBound();
float size = radius/bs.radius()*0.3f;
osg::MatrixTransform* positioned = new osg::MatrixTransform;
positioned->setDataVariance(osg::Object::STATIC);
positioned->setMatrix(osg::Matrix::translate(-bs.center())*
osg::Matrix::scale(size,size,size)*
osg::Matrix::rotate(osg::inDegrees(-90.0f),0.0f,0.0f,1.0f));
positioned->addChild(glider);
osg::PositionAttitudeTransform* xform = new osg::PositionAttitudeTransform;
xform->getOrCreateStateSet()->setMode(GL_NORMALIZE, osg::StateAttribute::ON);
xform->setUpdateCallback(new osg::AnimationPathCallback(animationPath,0.0,0.5));
xform->addChild(positioned);
model->addChild(xform);
}
osg::Node* cessna = osgDB::readNodeFile("cessna.osg");
if (cessna)
{
const osg::BoundingSphere& bs = cessna->getBound();
float size = radius/bs.radius()*0.3f;
osg::MatrixTransform* positioned = new osg::MatrixTransform;
positioned->getOrCreateStateSet()->setMode(GL_NORMALIZE, osg::StateAttribute::ON);
positioned->setDataVariance(osg::Object::STATIC);
positioned->setMatrix(osg::Matrix::translate(-bs.center())*
osg::Matrix::scale(size,size,size)*
osg::Matrix::rotate(osg::inDegrees(180.0f),0.0f,0.0f,1.0f));
//positioned->addChild(cessna);
positioned->addChild(cessna);
osg::MatrixTransform* xform = new osg::MatrixTransform;
xform->setUpdateCallback(new osg::AnimationPathCallback(animationPath,0.0f,1.0));
xform->addChild(positioned);
model->addChild(xform);
}
return model;
}
osg::Vec3 computeTerrainIntersection(osg::Node* subgraph,float x,float y)
{
osgUtil::IntersectVisitor iv;
osg::ref_ptr<osg::LineSegment> segDown = new osg::LineSegment;
const osg::BoundingSphere& bs = subgraph->getBound();
float zMax = bs.center().z()+bs.radius();
float zMin = bs.center().z()-bs.radius();
segDown->set(osg::Vec3(x,y,zMin),osg::Vec3(x,y,zMax));
iv.addLineSegment(segDown.get());
subgraph->accept(iv);
if (iv.hits())
{
osgUtil::IntersectVisitor::HitList& hitList = iv.getHitList(segDown.get());
if (!hitList.empty())
{
osg::Vec3 ip = hitList.front().getWorldIntersectPoint();
return ip;
}
}
return osg::Vec3(x,y,0.0f);
}
//////////////////////////////////////////////////////////////////////////////
// MAIN SCENE GRAPH BUILDING FUNCTION
//////////////////////////////////////////////////////////////////////////////
void build_world(osg::Group *root)
{
osg::Geode* terrainGeode = new osg::Geode;
// create terrain
{
osg::StateSet* stateset = new osg::StateSet();
osg::Image* image = osgDB::readImageFile("Images/lz.rgb");
if (image)
{
osg::Texture2D* texture = new osg::Texture2D;
texture->setImage(image);
stateset->setTextureAttributeAndModes(0,texture,osg::StateAttribute::ON);
}
terrainGeode->setStateSet( stateset );
float size = 1000; // 10km;
float scale = size/39.0f; // 10km;
float z_scale = scale*3.0f;
osg::HeightField* grid = new osg::HeightField;
grid->allocateGrid(38,39);
grid->setXInterval(scale);
grid->setYInterval(scale);
for(unsigned int r=0;r<39;++r)
{
for(unsigned int c=0;c<38;++c)
{
grid->setHeight(c,r,z_scale*vertex[r+c*39][2]);
}
}
terrainGeode->addDrawable(new osg::ShapeDrawable(grid));
root->addChild(terrainGeode);
}
// create particle effects
{
osg::Vec3 position = computeTerrainIntersection(terrainGeode,100.0f,100.0f);
osgParticle::ExplosionEffect* explosion = new osgParticle::ExplosionEffect(position, 10.0f);
osgParticle::ExplosionDebriEffect* explosionDebri = new osgParticle::ExplosionDebriEffect(position, 10.0f);
osgParticle::SmokeEffect* smoke = new osgParticle::SmokeEffect(position, 10.0f);
osgParticle::FireEffect* fire = new osgParticle::FireEffect(position, 10.0f);
explosion->setWind(wind);
explosionDebri->setWind(wind);
smoke->setWind(wind);
fire->setWind(wind);
root->addChild(explosion);
root->addChild(explosionDebri);
root->addChild(smoke);
root->addChild(fire);
}
// create particle effects
{
osg::Vec3 position = computeTerrainIntersection(terrainGeode,200.0f,100.0f);
osgParticle::ExplosionEffect* explosion = new osgParticle::ExplosionEffect(position, 1.0f);
osgParticle::ExplosionDebriEffect* explosionDebri = new osgParticle::ExplosionDebriEffect(position, 1.0f);
osgParticle::SmokeEffect* smoke = new osgParticle::SmokeEffect(position, 1.0f);
osgParticle::FireEffect* fire = new osgParticle::FireEffect(position, 1.0f);
explosion->setWind(wind);
explosionDebri->setWind(wind);
smoke->setWind(wind);
fire->setWind(wind);
root->addChild(explosion);
root->addChild(explosionDebri);
root->addChild(smoke);
root->addChild(fire);
}
// create the moving models.
{
root->addChild(createMovingModel(osg::Vec3(500.0f,500.0f,500.0f),100.0f));
}
}
// class to handle events with a pick
class PickHandler : public osgGA::GUIEventHandler {
public:
PickHandler() {}
bool handle(const osgGA::GUIEventAdapter& ea,osgGA::GUIActionAdapter& aa)
{
switch(ea.getEventType())
{
case(osgGA::GUIEventAdapter::PUSH):
{
osgProducer::Viewer* viewer = dynamic_cast<osgProducer::Viewer*>(&aa);
pick(viewer,ea);
}
return false;
default:
return false;
}
}
void pick(osgProducer::Viewer* viewer, const osgGA::GUIEventAdapter& ea)
{
osg::Group* root = dynamic_cast<osg::Group*>(viewer->getSceneData());
if (!root) return;
osgUtil::IntersectVisitor::HitList hlist;
if (viewer->computeIntersections(ea.getX(),ea.getY(),hlist))
{
osgUtil::Hit& hit = hlist.front();
bool handleMovingModels = false;
const osg::NodePath& nodePath = hit.getNodePath();
for(osg::NodePath::const_iterator nitr=nodePath.begin();
nitr!=nodePath.end();
++nitr)
{
const osg::Transform* transform = dynamic_cast<const osg::Transform*>(*nitr);
if (transform)
{
if (transform->getDataVariance()==osg::Object::DYNAMIC) handleMovingModels=true;
}
}
osg::Vec3 position = handleMovingModels ? hit.getLocalIntersectPoint() : hit.getWorldIntersectPoint();
float scale = 20.0f * ((float)rand() / (float)RAND_MAX);
float intensity = handleMovingModels ? 5.0f : 1.0f;
osgParticle::ExplosionEffect* explosion = new osgParticle::ExplosionEffect(position, scale, intensity);
osgParticle::ExplosionDebriEffect* explosionDebri = new osgParticle::ExplosionDebriEffect(position, scale, intensity);
osgParticle::SmokeEffect* smoke = new osgParticle::SmokeEffect(position, scale, intensity);
osgParticle::FireEffect* fire = new osgParticle::FireEffect(position, scale, intensity);
explosion->setWind(wind);
explosionDebri->setWind(wind);
smoke->setWind(wind);
fire->setWind(wind);
osg::Group* effectsGroup = new osg::Group;
effectsGroup->addChild(explosion);
effectsGroup->addChild(explosionDebri);
effectsGroup->addChild(smoke);
effectsGroup->addChild(fire);
if (handleMovingModels)
{
// insert particle effects alongside the hit node, therefore able to track that nodes movement,
// however, this does require us to insert the ParticleSystem itself into the root of the scene graph
// seperately from the the main particle effects group which contains the emitters and programs.
// the follow code block implements this, note the path for handling particle effects which arn't attached to
// moving models is easy - just a single line of code!
// tell the effects not to attach to the particle system locally for rendering, as we'll handle add it into the
// scene graph ourselves.
explosion->setUseLocalParticleSystem(false);
explosionDebri->setUseLocalParticleSystem(false);
smoke->setUseLocalParticleSystem(false);
fire->setUseLocalParticleSystem(false);
// find a place to insert the particle effects group alongside the hit node.
// there are two possible ways that this can be done, either insert it into
// a pre-existing group along side the hit node, or if no pre existing group
// is found then this needs to be inserted above the hit node, and then the
// particle effect can be inserted into this.
osg::ref_ptr<osg::Geode> hitGeode = hit.getGeode();
osg::Node::ParentList parents = hitGeode->getParents();
osg::Group* insertGroup = 0;
unsigned int numGroupsFound = 0;
for(osg::Node::ParentList::iterator itr=parents.begin();
itr!=parents.end();
++itr)
{
if (typeid(*(*itr))==typeid(osg::Group))
{
++numGroupsFound;
insertGroup = *itr;
}
}
if (numGroupsFound==parents.size() && numGroupsFound==1 && insertGroup)
{
osg::notify(osg::NOTICE)<<"PickHandler::pick(,) hit node's parent is a single osg::Group so we can simple the insert the particle effects group here."<<std::endl;
// just reuse the existing group.
insertGroup->addChild(effectsGroup);
}
else
{
osg::notify(osg::NOTICE)<<"PickHandler::pick(,) hit node doesn't have an appropriate osg::Group node to insert particle effects into, inserting a new osg::Group."<<std::endl;
insertGroup = new osg::Group;
for(osg::Node::ParentList::iterator itr=parents.begin();
itr!=parents.end();
++itr)
{
(*itr)->replaceChild(hit.getGeode(),insertGroup);
}
insertGroup->addChild(hitGeode.get());
insertGroup->addChild(effectsGroup);
}
// finally insert the particle systems into a Geode and attach to the root of the scene graph so the particle system
// can be rendered.
osg::Geode* geode = new osg::Geode;
geode->addDrawable(explosion->getParticleSystem());
geode->addDrawable(explosionDebri->getParticleSystem());
geode->addDrawable(smoke->getParticleSystem());
geode->addDrawable(fire->getParticleSystem());
root->addChild(geode);
}
else
{
// when we don't have moving models we can simple insert the particle effect into the root of the scene graph
osg::notify(osg::NOTICE)<<"PickHandler::pick(,) adding particle effects to root node."<<std::endl;
root->addChild(effectsGroup);
}
#if 0
osg::Geode* geode = new osg::Geode;
geode->addDrawable(new osg::ShapeDrawable(new osg::Sphere(position,scale)));
group->addChild(geode);
#endif
}
}
protected:
virtual ~PickHandler() {}
};
//////////////////////////////////////////////////////////////////////////////
// main()
//////////////////////////////////////////////////////////////////////////////
int main(int argc, char **argv)
{
// use an ArgumentParser object to manage the program arguments.
osg::ArgumentParser arguments(&argc,argv);
// set up the usage document, in case we need to print out how to use this program.
arguments.getApplicationUsage()->setDescription(arguments.getApplicationName()+" is the example which demonstrates use of particle systems.");
arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] image_file_left_eye image_file_right_eye");
arguments.getApplicationUsage()->addCommandLineOption("-h or --help","Display this information");
// construct the viewer.
osgProducer::Viewer viewer(arguments);
// set up the value with sensible default event handlers.
viewer.setUpViewer(osgProducer::Viewer::STANDARD_SETTINGS);
// get details on keyboard and mouse bindings used by the viewer.
viewer.getUsage(*arguments.getApplicationUsage());
// register the pick handler
viewer.getEventHandlerList().push_front(new PickHandler());
// if user request help write it out to cout.
if (arguments.read("-h") || arguments.read("--help"))
{
arguments.getApplicationUsage()->write(std::cout);
return 1;
}
// any option left unread are converted into errors to write out later.
arguments.reportRemainingOptionsAsUnrecognized();
// report any errors if they have occured when parsing the program aguments.
if (arguments.errors())
{
arguments.writeErrorMessages(std::cout);
return 1;
}
osg::Group *root = new osg::Group;
build_world(root);
osgUtil::Optimizer optimizer;
optimizer.optimize(root);
// add a viewport to the viewer and attach the scene graph.
viewer.setSceneData(root);
// create the windows and run the threads.
viewer.realize();
while( !viewer.done() )
{
// wait for all cull and draw threads to complete.
viewer.sync();
// update the scene by traversing it with the the update visitor which will
// call all node update callbacks and animations.
viewer.update();
// fire off the cull and draw traversals of the scene.
viewer.frame();
}
// wait for all cull and draw threads to complete before exit.
viewer.sync();
return 0;
}

3
runexamples.bat
View File

@ -81,6 +81,9 @@ osgoccluder glider.osg
echo osgparticle
osgparticle
echo osgparticleeffects
osgparticleeffects
echo osgpick
osgpick fountain.osg